14. I think that we do learn many things from our upbringing though

As we get older though, we do come to challenge the beliefs of our childhood. Some do this more than others. It is probably easiest for those who were also exposed to a competing viewpoint by before adulthood.
Did your great grandmother's anti-Semetic beliefs and your grandmother's relationships with Jews cause any problems between them or did they just try to avoid the subject between them? I think that it is hard to stand up to your parents or older relatives when you disagree with their beliefs because sometimes it can be seen as not only rejecting their beliefs but rejecting them. I applaud those who do.